sdp_agent: fix memory leak if debug is activated
sdp_agent: fix memory leak if debug is activated

Change-Id: Ia349c68c511514824c501e3e2594eaa96faf0ff4

Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core